Let's divide 976221 by 66
The aim is to understand the frequency of 66 in 976221.

On to step 1:
66 goes into 9 0 times with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Fetch the next digit (7) from the dividend, attach it to 9 and continue: 97 / 66

Advancing to step 2:
If we divide 97 by 66, we get 1 and a remainder of 31.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 66 from 97, we get 31.
Take the next digit (6) from the dividend and append it to 31, then repeat: 316 / 66

Advancing to step 3:
When dividing 316 by 66, we get 4 with a remainder of 52.
The next digit of our result is 4. 
Result so far: 14.0
If we take 264 away from 316, we end up with 52.
Take the next digit (2) from the dividend and append it to 52, then repeat: 522 / 66

Going ahead to step 4:
The number 66 fits into 522 7 times, leaving a remainder of 60.
Put 7 as the next digit of the answer. 
Result so far: 147.0
Subtracting 462 from 522 leaves us with 60.
Take the next digit (2) from the dividend and append it to 60, then repeat: 602 / 66

Step 5:
66 can be fit into 602 9 times, resulting in a remainder of 8.
The number 9 becomes the next digit in our result. 
Result so far: 1479.0
Deduct 594 from 602 and we're left with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 66

Moving on to step 6:
If we divide 81 by 66, we get 1 and a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 14791.0
Subtract 66 from 81 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 7:
When dividing 150 by 66, we get 2 with a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 14791.2
If we subtract 132 from 150, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 8:
66 goes into 180 2 times with a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 14791.22
Subtract 132 from 180 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

In conclusion, the division gives 14791.22 with a balance of 0.048.